Joseph p



(No Model.) I

J. P.' BRADFORD. GULTIVATQR TOOTH.

. No. 292,404. Pat ented Jan. 22, 1884.

X X bMMQ. 771W"! r, Washington. a c

A E OFFICE.

JOSEPH 'P.

BRADFORD, or wns ron, 'ronronn, ASSIGNOR on ONEHALF To ANDREW J. VVALTERS,'OF SAME, PLACE.

CUL'llVATOR-TOOTH.

srncrrion'rron forming partof Letters Patent No. 292,404., dated January 22, 1 884.

Applicalion filed July 9, 1883. (No model.)

reference marked thereon, which form a part of this specification.

- grain.

My invention relates to improvements in drill and cultivator teeth; and it consists in the construction, combination, and arrangement of the several parts, as will be herein after described and claimed.

In the drawings, Figure 1 is a side view of my improved drill-tooth,with gage-wheel, colter, 85c. Fig. 2 is a detail of the bars supporting the spring-colter. Fig. 3 is a plan View of the gage-wheel bracket. Figs. 4c, 5, and 6 are detail views of the drill-foot, and Fig. 7 is a detail perspective of the rear gageplate.

The, drill-tooth A is provided with the foot A, preferably made in the flat form shown, and the forward. edge of the tooth, just above the foot, is made very sharp, so as to present but little resistance to the ground. On the under side of the foot A, at the base of the tooth-opening,.I arrange a spreader-plate, a, on which the grain being planted drops. The sides of this spreader-plate are cut away to give the tapered form shown. The object of this is to give a more even distribution to the The grain thrown laterally from the forward and wider end drops to theouter sides of the furrow,while the narrow portions of the plate permit the grain to drop nearer the mid- .dle of said furrow. By this construction the grain is left evenly distributed over the bottom of the furrow. This plate is rounded on its upper side, and causes the grain to scatter to the opposite sides, preventing it from all dropping into the same spot. A rib or flange, A, is projected from the drill -tooth. This apart midway their ends by the block B and their rear ends extend on opposite sides of the ear A, and are secured theretoby the bolt 7), which is passed through suitable holes formed inthe said bars B and any one of the holes a",

as may be desired.

The colter 0 is secured on the bar B by the clipG, which passes around one of the strips of said bar, and by means of nuts 0 and clipplate a clamps the colter firmly to the bar 13, along which it may be readily adjusted, as desired. This colter O is composed of a spring metal strip forged to provide the portions 01 11, arranged edgewise tothe line of motion, and the intermediate portion, d, arranged at right angles. to portions (1 d, as shown. This portion d is the one that acts or serves as a spring to give elasticity to the colter in the operation of the device. The portion d is formed in suitable manner to cut the turf and soil in advance of the gage-wheel and supplemental colter, hereinafter described. 7

The colterD and gage-wheel E are supported on the bracket F. This bracket F may be made of. a single piece, as shown, or may be constructed of two side plates suitably clamped together. It is constructed with slots f f in its forward and rear ends. The slot f fits over the rib A on front of tooth A, and is fastened thereto by means of bolts f f which may be passed through the upper or lower holes of the series a, in order to adjust the gage-wheel to different heights. The bracket extends forward from the tooth A, and the gage-wheel E is journaled therein about midway its ends. The colter D is pivoted on bolt 6, passed through the'bracket F, at or near the lower .end of the slot f, and its upper end is retained within said slot by the pin 6, made of wood or other fragile material, and the colter D is held within the slot f by this pin 6 and bolt 6 in such manner that when the said colter strikes a stone or other obstruction in the ground the force of the stroke will break the pin 0 and the colter will turn back on its pivotbolt 6, as indicated in dotted lines, Fig. 1, and slide over the obstruction, as will be readily understood.

The point (2 of eolter (I, it will be seen, is slightly above the lower point of colter D, and the latter colter cuts to about the lower side of the tooth A, so that the soil to the full depth of the tooth is opened by degrees, lcssening the draft of the machine as well as the strain on the tooth. setting the wheel E up or down by means of the adjustment of the bracket before described, the depth of the tooth can be regulated.

A gage-plate, G, is secured to the rear side of the tooth A, and may be adjusted up or down to regulate the depth of the said tooth. This plate G may be used as a substitute for the gage-wheel E or in connection therewith. I prefer tousc it in the latter way, as thereby the tooth is braced in front and in rear, and held more firmly in position than when braced on one side only.

Having thus described my invention, what I claim, and desire to secure by Letters Patent,

1. The combination, substantially as hereinbefore described, of the tooth having a rib, A projected forward therefrom and perforated with a series of holes, a, the bracket having its rear end provided with slot f, slipped over the rib A and suitable fasteningbolts, the said bracket having a suitable colter secured to its forward end, and a gagewheel journaled in rear of said colter, as and for the purposes set forth.

2. The combination, with the tooth A and gage-wheel E, arranged in advance of and supported on bracket F, projected forward from said tooth, of a gage or depth-regulating device arranged and operating in rear of the tooth, substantially as and for the purposes set forth.

3. The combination of the tooth, the bracket projected forward therefrom in approximately a horizontal position, and provided with a suitable gage-wheel midway its ends, and the colter D, pivotally secured to the bracket by bolt 0, and held to the bracket above said pivot by a fragile pin, a, all arranged and operating substantially as and for the purposes set forth.

4. The combination, substantially as here inbefore described, of the tooth A, having forward rib or flange, A, the bracket F, having colter D and wheel E, the bar B, extended forward from said tooth, and the spring-colter 0, held adjustably to the bar B, with the lower end of its point (1 working in aplane above the point of colter l), as and for the purposes specified.

5. The combination, substantially as hereinbefore described and shown, of the drilltooth, the spreader-plate arranged within and at the base of same, the bracket F, removably secured to and projected forward from the tooth, the eolter D, and gage-wheel E, supported on said bracket, and the coverer and gage-plate G, arranged in rear of the tooth, as and for the purposes specified.

In testimony whereof I affix my signature in presence of two witnesses.

JOSEPH P. BRADFORD.

\Vitnesses:

A. J. W ALTERS, SARAH SoUTI-IWoRTu. 

